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Updated: May 22, 2026
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Preparation of Contiguous Bisaziridines for Regioselective Ring-Opening Reactions
Published on: July 28, 2022
Oriented Electric Field-Driven Cis-Azobenzene Selective Diborylation Reaction at the Single-Molecule Level
P A Sreelakshmi1, Reetu Rani Mondal1, Laust Rask2
1Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India.
Journal of the American Chemical Society
|May 20, 2026
Summary
Researchers developed a novel electric field catalysis method for single-molecule cis-azobenzene diborylation reactions. This approach uses intrinsic electric fields in nanocavities, enabling precise control without metal catalysts or light.
Area of Science:
- Synthetic Chemistry
- Nanocatalysis
- Physical Chemistry
Background:
- Developing catalysts with built-in electric fields is crucial for controlling complex chemical reactions.
- Achieving high stereo- and regioselectivity under mild conditions is a key objective in synthetic chemistry.
Purpose of the Study:
- To demonstrate a novel approach using intrinsic electric fields within a break junction nanocavity.
- To trigger and probe substrate-selective, multistep cis-azobenzene diborylation reactions at the single-molecule level.
- To explore the tuning of reactivity landscapes via external electrical fields in nanometallic junctions.
Main Methods:
- Utilized a break junction nanocavity to generate an intrinsic electric field.
- Performed single-molecule cis-azobenzene diborylation reactions in the dark under ambient conditions.
- Employed theoretical studies to corroborate experimental findings on electric field effects.
Main Results:
- Demonstrated substrate-selective, multistep cis-azobenzene diborylation triggered by the intrinsic electric field.
- Showcased tuning of the reactivity landscape for "N═N" bond functionalization and borylation via external electrical fields.
- Confirmed that electric fields reshape the trans-cis-azobenzene isomerization energy landscape, facilitating selective diborylation.
Conclusions:
- Electric field catalysis within nanoscale confined environments offers precise control over complex reactions.
- This method enables selective cis-azobenzene diborylation without metal catalysts or external light irradiation.
- The study opens new avenues in borylation chemistry through tunable electric field effects.
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